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My RV-8 Build Log
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Date:  11-11-2015
Number of Hours:  2.00
Manual Reference:  
Brief Description:  RG400 Assembly for Radios, Transponder and ADS-B

Sometime this week began working on the RG400 to connect the 2 radios, transponder and ADS-B. So, four cables and eight connectors. I have not crimped RG400 cable before; I really hate to screw this up, as RG400 is rather expensive.

Watched the Steinair video on YouTube, more than once, to get the idea. Had an extra straight BNC connector, so used it to test my skill at measuring the correct distances for cutting the outer covers, shield and inner cover to expose the inner wire. Found that you really need to make sure the shield wire does not short the connector, it just takes a single strand from the shield to create undesired continuity.

After getting a handle on the process, crimped the straight BNC connector for the ADS-B antenna, this was easiest to get to. I used the same on the transponder pole antenna, forward of the ADS-B antenna located near the rear control stick, but sufficiently out of the way for clearance.

Performed the same for the ADS-B receive (GDL39R) located under the right console of the forward position.

Next crimped 90 degree BNC connectors to the two bent com antennas mounted just aft of the main wing spar, and routed to the com radios.

Finally, crimped and connected the transponder, and both com radio BNC connectors.

I tested for shorts, and continuity for each cable, mostly because for the 90 degree BNC connectors, there is no positive click action when the cable is inserted into the connector.
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ADS-B antenna BNC connector to RG400 cable

ADS-B antenna BNC connector to RG400 cable

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90 Degree BNC connector for GTR200 Com radio to RG400

90 Degree BNC connector for GTR200 Com radio to RG400

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One of Two Com antenna 90 Degree BNC connectors

One of Two Com antenna 90 Degree BNC connectors

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